# CVE-2021-21505: Hardcoded credentials in Dell EMC Integrated System for Microsoft Azure Stack Hub

> Remote attackers can use undocumented default iDRAC credentials to log in and gain root privileges on Dell EMC Azure Stack Hub systems.

- **Severity:** High 8.0 (`CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 6 May 2021
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-3j78-gc32-cr37

## What is CVE-2021-21505?

CVE-2021-21505 is a high-severity vulnerability in Dell EMC Integrated System for Microsoft Azure Stack Hub, published on 6 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Dell EMC Integrated System for Microsoft Azure Stack Hub, versions 1906 – 2011, contain an undocumented default iDRAC account. A remote unauthenticated attacker, with the knowledge of the default credentials, could potentially exploit this to log in to the system to gain root privileges.

Weakness: CWE-1188 (Initialization of a Resource with an Insecure Default), CWE-255

## Which versions are affected by CVE-2021-21505?

It affects 1 product.


Products: Dell Emc Integrated System for Microsoft Azure Stack Hub Firmware.

## How do I fix CVE-2021-21505?

No fix has been published for CVE-2021-21505 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-21505 being exploited?

There is no known exploitation of CVE-2021-21505 in the wild and no public exploit code.

## Other vulnerabilities in Dell EMC Integrated System for Microsoft Azure Stack Hub

- [CVE-2021-36302](https://insights.sbomify.com/CVE-2021-36302/): Privilege escalation in Dell EMC Integrated System for Microsoft Azure Stack Hub (critical 9.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-21505 and fix it if it is affected.

What it is: CVE-2021-21505 is a high-severity vulnerability in Dell EMC Integrated System for Microsoft Azure Stack Hub, published on 6 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-21505 in the wild and no public exploit code.

Affected product: Dell EMC Integrated System for Microsoft Azure Stack Hub. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2021-21505/ (Markdown: https://insights.sbomify.com/CVE-2021-21505/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-21505
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-21505
- OSV: https://osv.dev/vulnerability/CVE-2021-21505

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-21505/
Summaries are generated and may contain mistakes; the official description above is the record.